ArticleArchives of medical science : AMS2026
Unraveling the underlying causality: a two-sample Mendelian randomization analysis of the association between thyroid function and gestational diabetes mellitus.
Article in Archives of medical science : AMS, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Previous studies on the relationship between thyroid function disturbance and the development of gestational diabetes mellitus (GDM) have reported inconsistent results. We aimed to investigate the relationship between thyroid function disturbance and GDM using Mendelian randomization (MR) analysis. Material and methods: This MR study used summary data from genome-wide association studies (GWAS) of thyroid function disturbance (18,297 individuals) and GDM (41,647 participants). The inverse variance weighted (IVW) method was primarily employed for analysis, complemented by the weighted median, weighted mode, and MR-Egger regression. Sensitivity analyses included MR-Egger, MR-PRESSO, Cochran's Q, and leave-one-out approaches to assess the robustness of the findings. Results: The genetically determined thyroid function disturbance did not exhibit a statistically significant causal effect on GDM (FT4: OR = 0.99, 95% CI: 0.88-1.11, Conclusions: Our study found no significant causal effect of thyroid function disturbance on the risk of GDM based on the MR analysis, highlighting the need for further research to explore alternative mechanisms or potential subgroups where thyroid function may play a role in GDM development.
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